US 12,451,740 B2
Rotary electric machine having winding coils with first and second portions connected in series
Russel Hugh Marvin, Potsdam, NY (US); and Dylan Broomfield, Gansevoort, NY (US)
Assigned to LC Advanced Motor Technology Corporation, New York, NY (US)
Filed by LC Advanced Motor Technology Corporation, New York, NY (US)
Filed on Nov. 1, 2022, as Appl. No. 17/978,883.
Application 17/978,883 is a continuation of application No. 16/710,171, filed on Dec. 11, 2019, granted, now 11,489,377.
Prior Publication US 2023/0051194 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 1/16 (2006.01); H02K 1/18 (2006.01); H02K 3/14 (2006.01); H02K 21/14 (2006.01)
CPC H02K 1/165 (2013.01) [H02K 1/185 (2013.01); H02K 3/14 (2013.01); H02K 21/14 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotary electric machine comprising:
a stator extending along an axis and having teeth arranged about the axis, the teeth being circumferentially spaced apart by slots; and
winding coils extending around the teeth and through the slots, the winding coils being electrically connected to one another to form phases, at least one of the winding coils having:
a first portion extending through first and second slots of the slots and including:
first end turns extending between the first and second slots over an axial end surface of the teeth;
a first joint end tum contiguous with the first end turns;
a second portion extending through the first and second slots and including: second end turnsextending between the first and second slots over the axial end surface of the teeth, and a secondjoint end tum contiguous with the second end turns; and
the first joint end turn and the second joint end turn being connected in series at a joint wherein the first joint end tum and the second joint end tum are spaced an axial distance closer
to an axial end surface of the teeth than either the first or second end turns.